Saw gummer and swager.



W. H. MozINGo. SAW GUMMER AND SWAGER.

APPLICATION FILED AUG. 15, 1911.

Patented Oct. 8, 1912.

3 SHEETS-8111311122.

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Inventor,

r I Attorneys.

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W. H. MOZINGO.

SAW GUMMER AND SWAGBR.

APPLIOATION FILED 11116.16, 1911.

Patented Oct. 8, 1912.

3 SHEETS-SHEET y3.

l i d nventor,

WMZ

Attorneys.

FFCE.

WILLIAM H. MOZINGO, OF I-IURDLAND, MISSOURI.

SAW GUMMER AND SWAGER.

To all whom t may concern:

Be it known that I, "WILLiAM H. MoziNoo, a citizen of the United States,residing at Hurdland, in the county of Knox and State of Missouri, haveinvented a new and useful Saw Glimmer and Swager, of which the followingis a specification.

This invention relates to improvements in si W gummers and swagers, andthe primary object of this invention is the provision of a deviceadapted to be attached to a circular saw and provided with means forrolling out and flattening the point to produce a swaging action withoutthe usual driving and hammering that is considered necessary, incombination with a rotary means adapted to be substituted in lieuthereof to enter between the teeth and gum the same to produce thedesired results.

A further object of this invention is the provision of a tool providedwith clamping means and with a slot whereby the said tool is mountedupon and clamped to straddle the cutting edge of a circular or lumbersaw, combined with an adjustable rotary swaging and gumming disk withco-acting means for feeding the screw and the rotary swaging or gummingdisk so as to feed the said swaging disk or gumming disk toward the sawtooth or throat operating thereupon, thus providing a simultaneousaction and an even feed to produce the desired result in swaging or inproducing a desired throat to the saw.

A. still further object of this invention is the provision of a frameprovided with a slot to fit upon and straddle the cutting edge of acircular saw, the same being provided with means to limit the movementof a saw tooth during the swaging action thereof, a yoke carrying arotary swaging disk being slidably mounted in said frame while operablyconnected to the shaft carrying the swaging disk with means foractuating the feed screw to operate the yoke and feed the swaging diskunder pressure during the rotary action to produce the desired spreadingof the tooth, without the usual hammering or driving action.

In connection with this tool is employed a bur or toothed cutter adaptedto be inserted within the throat of the saw to gum the same, the samemechanism being employed for gumming and for swaging, except that theblade or tooth of the saw is Specification of Letters Patent.

Application led August 15, 1911.

Patented @et 8, 1912.

Serial No. 644,232.

projected within the frame at a different angle.

Vith the foregoing and other objects in view, which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of invention herein disclosed can be made within the scope ofwhat is claimed without departing from the spirit of the invention.

In the drawings Figure l is a side elevation of the complete tool. Fig.2 is a front elevation thereof. Fig. 3 is a vertical central sectionalview taken on line 3-3 of Fig. 2, dotted line showing the position of asaw during the gumming operation.V Fig. 4 is a sectional view taken online 4 4 of Fig. 3. Fig. 5 is a section taken on line 5-5 of Fig. Q.Fig. G is a detail view of the worm for actuating the feeding of thegumming and swaging yoke during the rotation of the gumming and swagingdisk. Fig. 7 is a detail view of the swaging disk per se. Fig. 8 is aView demonstrating the device in use as gumming a cross-cut saw. Fig. 9is a perspective view of an adjustable clamp used to retain the deviceduring the gumming of a cross cut saw. Fig. 10 is a detail detachedperspective view of boxing or adjusting means for effecting thetransverse adjust ment of the saw swaging and gumming shaft. Fig. 11 isa detail perspective view of the main shaft with a modified form of toolin the form of a combined gumming and swaging disk. i

Referring to the drawings, the numeral l designates the frame which isprovided at its upper end with the angle portion or projeetion 2 having`a central bore 3 therein, in which is slidably and adjust-ably mounted,a bushing or collar 4t whose central bore is threaded for the receptionof the feed or clamping screw 5. This feed screw 5 is provided at itsupper end with an operating hand wheel 6, Whileits lower endis swiveledtransversely to the yoke 7, which is disposed for vertical operationwithin the throat of the frame. The rotation of the hand wheel 6 in onedirection will move the yoke upwardly, while a reverse rotation willmove it downwardly, it being more particularly provided to raise theyoke, however, than to lower it, as the yoke is automatically loweredduring the gumming and swaging operation as will later appear. In orderto lock the collar 4 at the desired adjustment from the projection 2, alock or set screw 8, is provided. rlhe frame is provided with a longvertical slot 10 forming the spaced members 9 whereby a saw may beinserted between the frame to be acted upon either for swaging or forgumming., In the projection 11 is provided a curved wall 12 and spacedbetween the members 9 across the slot are the two removable pins 13which fit within the slot and guide the sliding and adjustablesaw-holding block or clamp 14 having the small upper end 14 adapted tobe moved upwardly within the space formed between the members 9 andagainst the inclined surface 12 of the projection 11, the said clampingdevice 14 having connected upon its outer face the right angled arm 15which is pivotally connected to the adjusting screw 16 mounted in theprojection 11. rlhe device or clamp 14 is used when it is desired toswage the saw, but when it is desired to gum the saw the same is removedby disconnecting the same from the screw 16, or it may be movedvertically and upwardly to its limit and permit the insertion of theteeth as clearly shown in dotted lines in Fig. 3. The frame at its rearportion is provided with the two alined abutments 17 and 1S, to whichare mounted the clamping screws 19 and 2O having the operating disks orhandles 21 and 22, respectively, the same providing a means whereby thedevice may be placed to straddle the cutting edge of a saw and saidclamping device is operated to engage the saw toretain the device inoperative position. ln order to properly guide the yoke 7 within theframe and retain the same in its proper vertical movement, the twodetachable guides 24 are secured to the arms of said yoke adjacent tothe frame 1 and have their rib portion 25 slidably mounted in verticalgrooves 25 formed in the side walls of the frame as clearly shown inFigs. 1 and 5. rlhe set screws 19 and 20 are in line with the respectiveclamping screws 19 and 2O and by the manipulation of the respectivescrews various widths of saws may be accommodated wit-hin the frame andproperly centered.

Carried by the respective arms of the yoke are the two adjusting screws26 in which pass downwardly through said arms and operate upon the boxes26 journaled in the ends of said arms and carrying the shaft 27, formovement thereon, so that the same may be removed and have placedthereon either the removable and interchangeable saw gumming disk 28 orthe removable and interchangeable swaging disk 29, the disk 23 being atoothed disk when it is desired to cut or gum within the throat of thesaw,

whereas in the swaging disk, a plain cylindrical disk, is employed toswage or force the point of the saw to engage the clamping device 14. Bythis means, the swaging disk 29, being rotated in the direction of thearrow Fig. 3, there is produced on the saw tooth a flattened drawn pointinstead of a battered one, such battering tending to mash the grain ofthe metal and making it brittle, whereas by rolling or drawing7 as in 75the present instance, the metal is not injured, but a better cuttingpoint is provided by the rolled or drawn action. Bot-h the disks 28 and29 are provided with key ways so that they may be removably keyed to thev shaft 27.

Secured to the yoke 7 and projecting upward therefrom and carriedthereby is a support 30, the same being a narrow plate and mountedwithin a groove or slot 31 of 85 the projection 2 and in line with thefeed screw 5, as clearly shown in Fig. 4, the same carryinov at itsupper end a boxing or journal 32 having two eyes which are journaled jat 33, while in order to hold the said boX 9o orI journal adjustably tothe upper endo-i M the frame 30 a set screw 34 is employed adjacent theright angled end 34 to secure the same within the lower portion of theboxing 32.

Journaled within the bearings 33 of the boxing 32 is a shaft 35, uponwhose inner end is carried the disk 36 provided with the cam or worm 37adapted to mesh with the teeth 38 carried by the disk 39 upon the feedscrew 5, whereby any rotation imparted to the shaft 35 will transmit thesame motion to the worm 37 and thereby rotate the disk 39, which is fastto feed screw 5 to move the yoke 7 and its swaging or gumming disksdownwardly to act upon the saw as desired.

Secured to the outer face of the arm of the yoke 7 upon the same side asthe frame 30 is a standard 40, to which is pivoteol intermediate of itsends by means of adjustable journal or pivot 41, the lever 42, whoseupper end 43 is pivotally connected to the crank arm 44 of the shaft 35,the lower end thereof being provided with a strap 46 surrounding theeccentric 45 which is connected eccentrically to one end of the shaft27. The shaft 27 is provided with a lever 47 and crank 48, whereby thesaid shaft 27 may be rotated, the same rotating the eccentric 45 so asto oscillate the lower end of the lever 42 imparting a rotary action tothe shaft 35 and thereby moving the feed screw 5 and the yoke 7 carryingthe swaging or gumming tool, simultaneously with the rotating of saidswaging or gumming tool. By this means it will be seen that the feedscrew is operated so as to retain the gumming or swaging disk at thedesired tension with relation to the saw acted upon within lot the frameof the device thereby rendering the said feed more even than would bethe case when the disk G is operated manually to feed the screw.

The shaft 27 may be operated from either end and when this is done, along shaft 49 is attached at an opposite point to the crank 48, saidshaft 49 having a crank whereby the shaft may be rotated.

In order to assist in holding the saw teeth properly in the device,while the saw is bef ing gummed, as shown in dot-and-dash lines Fig. 3,the boot-shaped plate 52 is employed. By reason of the slot 5() andscrew 51, this device is slidably and adjustably connected to the upperface of the projec tion 2 of the frame 1, and when in operable relationis projected outwardly as shown in Figs. 3 and 4 to be over the slot 10,and form an abutting means for the saw tooth. Thus the saw when beinggulnmed, is properly held within the slotI 10, by means of the device 52and the curved wall 12 of the projeetion 11.

When the device is used to gum regular cross-cnt lumber saws, it is heldin place as demonstrated in Fig. S, the saw engaging device, composed ofthe hooked member 53,

1 being pivoted by the upper set screw 19 to the main frame, and bymeans of its telescopic connection 54 with the sleeve or member 55, andthe clamping end 56, is adjustably connected to the saw as shown indotted lines Fig. 8.

In Fig. 10 are shown co-acting members of the box 26 which fit withinthe respecv tive slots of the yoke 7 and have ridges and grooves 262Land 2Gb which co-act with the ridges and grooves 5S of the shaft 27, topermit the shaft 27 to be adjusted transversely in the frame to bringthe gumming portion 59, or the swaging portion 60 of the combinedgumming and swaging tool G1 (Fig. 11) into position with the saw, theadjustment also being provided to permit of the taking care of the wearupon the single gumming disk 28 or the single swaging disk 29. Thisboxing 26 is the regular one used with the shaft shown in Figs. 1, 3 and4 and with the shaft shown in Fig. 11, and renders the positioning ofthe swaging, or gumming disks shown in Figs. 3 and 7, or the combinedgumming and swaging disk shown in Fig. 11 more easily and quicklyadjusted upon the shaft 27, said disks being slidably keyed upon theshaft so as to rotate at all times therewith.

In use when the device is gumming a saw as in Fig. 3, dot-and-dashlines, the plate 14 is removed, this plate 14 being used when swaging asin dotted lines in Fig. 3.

By mounting the boxing 32 removably upon the right angled end 34 of theframe 30, the set screw 34 can be released and the boxing 32 slidoutwardly to carry the worm 37 out of engagement with the disk 39. Thehand wheel G may new be rotated so that the screw threads upon the stem5, will cause the yoke 7 and its shaft 27 to be raised to the desiredheight. To set the device for operation again, the boxing 32 is movedinwardly to bring the worm 37 i into engagement with the disk 39, atwhich time the set screw 34 is set to clamp the frame 32, rigidly uponthe end 34 of the frame 30. As the frame 30 is carried by the yoke 7,the same remains at all times in the same relative position to the disk39, shaft 35, lever 42 and the shaft 27.

Vhen operating the device to swage a saw tooth, the saw tooth assumesthe position as shown in dotted lines, Fig. 3, the shaft 27 beingrotated in the direction of the arrow, thus clamping the disk 29 toguard or wedge the point of the saw upwardly and against the lowercurved portion of the block 14, the continued rotation of the shaftthrough the eccentric 47, the lever 42, and the shaft 35, rotating thestem 5 which rotation imparts to the entire yoke 7 and the parts carriedthereby, the desired downward movement, so that the swaging disk 29 isbrought into gradual and closer engagement with the saw tooth and thedesired flattening and drawing of the tooth is accomplished. Vhen thegumming disk 23 is used, the block 14 is removed and the saw teethassume the position as shown in dot-and-dash lines Fig. 3. r1`he disk 28is placed within the throat between the saw teeth and the shaft 27 isrotated in the same direction as for swaging, that is the direction ofthe arrows Fig. 3, the stem 5 feeding the yoke 7 and shaft 27downwardly, as in the swaging action to give a gradual downward feed tothe disk 23, as is done before. As before stated at the end of eachoperation, the gear 39 and worm 37 are thrown out of engagement and thehand wheel G is manually operated to raise the yoke 7 and the shaft 27.

From the foregoing description taken in connection with the drawings, itis apparent that a tool or device made according to this invention maybe made very durable, and by reason of the vertically adjustable toolcarrying device in combination with the rotary means mounted at one sideso as to produce simultaneous operation, in combination with a toolmechanism operably connected with th yoke and rotary portion carried bythe yoke, the desired rotation and pressure is imparted to said. gummingor swaging disk at the proper time and the proper cutting edge is giventhe saw.

It will thus be seen that by producing a device of this kind that lumbersaws and Vthe circular saws may be operated upon,

mered, this action Haring the cutting side and spreading the ends duringthe drawing action, instead of battering by the hammering action as isthe usual custom, and by means of the substitution of a toothed disk inlieu of the swaging disk, the throat of the saw may be acted upon andthe saw properly gummed. It will also be noted that a device of thiskind may be made completely of steel so as to make it very durable andcompact and inexpensive, and also render the operation of such a tool sosimplethat the ordinary mill hand may gum or. swage the saw, as well ascould be accomplished by a saw expert.

What is claimed is l. In a device of this character, a frame adapted tostraddle the cutting edge of a saw, a yoke slidably mounted in saidframe, a shaft rotatably mounted in said yoke, ak feed screw forimparting to the yoke and`r shaft a sliding movement toward and away vfrom saw-engaging position, a rotary tool;r removably carried by theshaft, a lever carried by the yoke and operably connected to the shaftto receive a reciprocating movement therefrom, and co-acting meanscarried by the screw and operably connected to the' upper end of thelever for operating the screw to feed the yoke and tool toward the` sawduring the rotation of the shaft. 2. In a device of this character, aframe, adapted to straddle the cutting edge of saw, a yoke slidablymounted in said frame, ,l a shaft rotatably mounted in said yoke, aifeed screw for imparting to the yoke andr` shaft a sliding movementtoward and away from saw-engaging position, a rotary tool removablycarried by the shaft, a lever carried by the yoke and operably connectedto the shaft to receive a reciprocating move-z ment from the shaft, acrank shaft operably connected to the upper end of said lever, andco-acting means carried by the crank: shaft and screw to impart to thescrew aV movement to feed the tool toward the saw',` while the shaft isbeing rotated.

3. ln a device of this character, a frame adapted to straddle thecutting edge of a` saw, a yoke slidably mounted in said frame, a shaftrotatably mounted in said yoke, a feed screw for imparting to the yokeand shaft a sliding movement toward and away.`

from saw-engaging position, a rotary tool removably carried by theshaft, a lever carried by the yoke and operably connected to the shaftto receive a reciprocating movement from the shaft, a crank shaftoperably connected to the upper end of the lever, a worm cam carried bysaid crank shaft, and a disk keyed to the shaft and having peripheralpins adapted to be engaged by the cam to rotate the feed screwsimultaneously with the rotation of the shaft and tool.

t. In a device of this character, a frame adapted to straddle thecutting edge of a saw, a yoke slidably mounted in said frame,

l a shaft rotatably mounted in said yoke, a 1 feed screw for impartingto the yoke and shaft a sliding movement toward and away fromsaw-engaging position, a rotary tool removably carried by the shaft, aneccentric mounted upon one end of said shaft, a lever having its lowerend connected to the eccentric and pivoted intermediate of its ends tothe yoke to receive a reciprocating movement when the shaft is rotated,and co-acting means carried by the screw and the upper end of the leverfor imparting to the screw a rotary movement simultaneously with therotation of the shaft and tool.

5. ln a device of this character, a frame adapted to straddle thecutting edge of a saw, a yoke slidably mounted in said frame, a shaftrotatably mounted in said yoke, a feed screw for imparting to the yokeand shaft a sliding movement toward and away from saw-engaging position,a rotary tool removably carried by the shaft, an eccentric mount-ed uponone end of said shaft, a lever having its lower end connected to theeccentric and pivoted intermediate `of its ends to the yoke to receive areciprocating movement when the shaft is rotated, a toothed disk carriedupon theupper end of the feed screw, and a rotatably mounted worm camdisposed in engagement with said disk and operably connected to theupper end of the lever.

In testimony that I claim the foregoing as my own, I have hereto afiXedmy signature in the presence of two witnesses.

VLLIAM H. MOZINGO.

Witnesses: l

ARTHUR R. THOMAS, G. M. HAsHER.

opies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

